import Transform from '../transform.js';
/**
 * Propagate empty internal targets to the next element.
 *
 *     Given the following nodes::
 *
 *         <target ids="internal1" names="internal1">
 *         <target anonymous="1" ids="id1">
 *         <target ids="internal2" names="internal2">
 *         <paragraph>
 *             This is a test.
 *
 *     PropagateTargets propagates the ids and names of the internal
 *     targets preceding the paragraph to the paragraph itself::
 *
 *         <target refid="internal1">
 *         <target anonymous="1" refid="id1">
 *         <target refid="internal2">
 *         <paragraph ids="internal2 id1 internal1" names="internal2 internal1">
 *             This is a test.
 
*/
export declare class PropagateTargets extends Transform {
    apply(): void;
}